August in the catalog is 11–18°C with a 33% rain note. That is a climate normal, not the 2027 forecast.
In this guide · 1 decisions
What we are not calling a forecast
Use the live forecast inside race week. The marathon page does not publish a weather guarantee.
Race-week weather
The seven-day window opens only when it matters
Checking the race-week forecast window…
Continue the plan
Apply the forecast to the start chainPlan layers, transport, start-village waiting, finish exit, and reunion.Edition status
Race day on the organizer's marathon page is Sunday 29 August 2027. Wheelchair start is listed at 6:15am and mass participation at 6:30am, with a note that group times come later. The course line on this page is sampled from the linked 2026 GPX, not drawn by us.